Time Conversions

[Mya Majewski 1L]

For [A]=[A]oe^-kt, there seems to always be conversions associated with the -kt and time, do you convert the k or the t to equal the same units (minutes, seconds, hours) as one another?

[Karan Thaker 2L]

Use the appropritate time conversions: 1 hr is 60 mins, 60 secs in 1 min, 24 hr in day, etc.Set up diagonal conversions to cancel units out and end in whatever time unit you need.

[Yvonne Du]

Yes, just make sure that your units are consistent.

[Mya Majewski 1L]

if your k is in min^-1 and your t is in seconds then what do you do?

[805169754]

if your k is in min^-1 and your t is in seconds then what do you do?

You can convert either one as long as it matches/is consistent with the other. You should try to see if the question specifies in what units it wants the answer.

[Ethan Breaux 2F]

always use the units that the question initially gives you unless stated otherwise. so yeah convert everything to one type of unit. and don't forget conversions between kJ and J (unrelated sidenote)

[Claudia Luong 4K]

You can use any time unit as long as the same time unit is used for all values in the problem.

[Abigail_Hagen2G]

So, it doesn't matter seconds or minutes as long as you have all the same units.

[205405339]

both should have the same units. it does not really matter what unit it is as long as units match

[kristi le 2F]

The units should be the same so that they will cancel out when doing calculations. Also, sometimes, the question will ask for the answer in a particular unit.